Altera Remote Update IP Core User Manual
Page 31
Name
Port
Required
?
Description
read_source
Input
Yes
Specifies whether a parameter value is read from
the current or a previous state.
This 2-bit port specifies the state from which a
parameter value is read. This signal is valid only
when the
read_param
signal is valid.
Mapping
read_source[1..0]
to Selected Source
is defined as follow:
•
00
- Current State Content in Status Register
•
01
- Previous State Register 1 Content in
Status Register
•
10
- Previous State Register 2 Content in
Status Register
•
11
- Value in Input Register
For details, refer to the Configuration, Design
Security, and Remote System Upgrades chapter
in the respective device handbook.
clock
Input
Yes
Clock input to the remote update block.
Clock input to control the machine and to drive
the remote update block during the update of
parameters.
This port must be connected to a valid clock.
reset
Input
Yes
This is an active high signal. Asserting this signal
high will reset the IP core.
Asynchronous reset input to the IP core to
initialize the machine to a valid state. The
machine must be reset before first use, otherwise
the state is not guaranteed to be valid.
busy
Output
No
Busy signal that indicates when remote update
block is reading or writing data.
While this signal is asserted, the machine ignores
most of its inputs and cannot be altered until the
machine deasserts this signal. Therefore, changes
are made only when the machine is not busy.
This signal goes high when
read_param
or
write_param
is asserted, and remains high until
the read or write operation completes.
UG-31005
2015.04.07
Ports
31
Altera Remote Update IP Core User Guide
Altera Corporation